Multiple pyqt window switches

I recently wrote a software program using pyqt. When I click a new window in the implementation menu bar, it is severely shelled. I found that wxpython's ideas and methods are completely unfeasible. There are too few Chinese materials for pyqt. After reading the English documents and QT documents, I pushed the implementation method of pyqt and finally got it done. Below is a small demo.

The code for the main interface is as follows:

#-*-Coding: UTF-8-*-from pyqt4 import qtcore, qtguifrom dialog1 import dialog1from dialog2 import dialog2import systry: _ fromutf8 = qtcore. qstring. fromutf8except attributeerror: def _ fromutf8 (s): Return stry: _ encoding = qtgui. qapplication. unicodeutf8 def _ translate (context, text, disambig): Return qtgui. qapplication. translate (context, text, disambig, _ encoding) failed t attributeerror: def _ translate (context, text, disambig): Return qtgui. qapplication. translate (context, text, disambig) Class mainwindow (qtgui. qwidget): dialogw.signal = qtcore. pyqtsignal () # defines a non-parameter signal. The serial port setting and the sub-station initialization signal dialog2_signal = qtcore. pyqtsignal () # defines a non-parameter signal. The serial port setting and the sub-station initialization signal exit_signal = qtcore. pyqtsignal () # defines a non-parameter signal. The serial port setting and the station initialization signal def _ init _ (Self): Super (mainwindow, self ). _ init _ () def setupui (self, form): form. setobjectname (_ fromutf8 ("form") form. resize (400,300) self. form = form self. pushbutton = qtgui. qpushbutton (form) self. pushbutton. setgeometry (qtcore. qrect (70, 90, 75, 23) self. pushbutton. setobjectname (_ fromutf8 ("Pushbutton") self. pushbutton_2 = qtgui. qpushbutton (form) self. pushbutton_2.setgeometry (qtcore. qrect (240, 90, 75, 23) self. pushbutton_2.setobjectname (_ fromutf8 ("pushbutton_2") self. pushbutton_3 = qtgui. qpushbutton (form) self. pushbutton_3.setgeometry (qtcore. qrect (150,160, 75, 23) self. pushbutton_3.setobjectname (_ fromutf8 ("pushbutton_3") self. label = qtgui. qlabel (form) self. label. setgeometry (qtcore. qrect (170, 40, 54, 16) self. label. setobjectname (_ fromutf8 ("label") self. retranslateui (form) qtcore. qmetaobject. connectslotsbyname (form) # connect the signal to the specified slot self. pushbutton. clicked. connect (self. on_pushbutton_clicked) self. pushbutton_2.clicked.connect (self. on_pushbutton_2_clicked) self. pushbutton_3.clicked.connect (self. on_pushbutton_3_clicked) def retranslateui (self, form): form. setwindowtitle (_ translate ("form", "form", none) self. pushbutton. settext (_ translate ("form", "Enter dialog1", none) self. pushbutton_2.settext (_ translate ("form", "Enter dialog2", none) self. pushbutton_3.settext (_ translate ("form", "quit", none) self. label. settext (_ translate ("form", "main form", none) def on_pushbutton_clicked (Self): Self. form. hide () form1 = qtgui. qdialog () UI = dialog1 () UI. setupui (form1) form1.show () form1.exec _ () self. form. show () def on_pushbutton_3_clicked (self, form): # qtcore. qobject. connect (self. pushbutton_3, qtcore. signal ("clicked ()"), self, qtcore. slot (quit () # You can also self. form. close () def on_pushbutton_2_clicked (Self): Self. form. close () form1 = qtgui. qdialog () UI = dialog2 () UI. setupui (form1) form1.show () form1.exec _ () self. form. show () If _ name _ = '_ main _': APP = qtgui. qapplication (sys. argv) form = qtgui. qwidget () window = mainwindow () window. setupui (form) form. show () sys.exit(app.exe C _ () Pass

The code of the dialog1 interface is as follows:

#-*-Coding: UTF-8-*-from pyqt4 import qtcore, qtguitry: _ fromutf8 = qtcore. qstring. fromutf8except attributeerror: def _ fromutf8 (s): Return stry: _ encoding = qtgui. qapplication. unicodeutf8 def _ translate (context, text, disambig): Return qtgui. qapplication. translate (context, text, disambig, _ encoding) failed t attributeerror: def _ translate (context, text, disambig): Return qtgui. qapplication. translate (context, text, disambig) Class dialog1 (qtgui. qwidget): def setupui (self, DIALOG): dialog. setobjectname (_ fromutf8 ("dialog") dialog. resize (400,300) self. form = dialog self. label = qtgui. qlabel (DIALOG) self. label. setgeometry (qtcore. qrect (180, 50, 54, 12) self. label. setobjectname (_ fromutf8 ("label") self. dialog?pushbutton = qtgui. qpushbutton (DIALOG) self. dialog1_pushbutton.setgeometry (qtcore. qrect (160,130, 75, 23) self. dialog?pushbutton.setobjectname (_ fromutf8 ("Pushbutton") self. retranslateui (DIALOG) qtcore. qmetaobject. connectslotsbyname (DIALOG) # connect the signal to the specified slot self. dialog?pushbutton.clicked.connect (self. on_dialog1_pushbutton_clicked) def retranslateui (self, DIALOG): dialog. setwindowtitle (_ translate ("dialog", "dialog", none) self. label. settext (_ translate ("dialog", "dialog1", none) self. dialog1_pushbutton.settext (_ translate ("dialog", "", none) def on_dialog?pushbutton_clicked (Self): Self. form. close () If _ name _ = "_ main _": Import sys APP = qtgui. qapplication (sys. argv) dialog = qtgui. qdialog () UI = dialog1 () UI. setupui (DIALOG) dialog. show () sys.exit(app.exe C _())

The code of the dialog2 interface is as follows:

#-*-Coding: UTF-8-*-from pyqt4 import qtcore, qtguitry: _ fromutf8 = qtcore. qstring. fromutf8except attributeerror: def _ fromutf8 (s): Return stry: _ encoding = qtgui. qapplication. unicodeutf8 def _ translate (context, text, disambig): Return qtgui. qapplication. translate (context, text, disambig, _ encoding) failed t attributeerror: def _ translate (context, text, disambig): Return qtgui. qapplication. translate (context, text, disambig) Class dialog2 (object): def setupui (self, DIALOG): dialog. setobjectname (_ fromutf8 ("dialog") dialog. resize (400,300) self. form = dialog self. label = qtgui. qlabel (DIALOG) self. label. setgeometry (qtcore. qrect (180, 60, 54, 12) self. label. setobjectname (_ fromutf8 ("label") self. pushbutton = qtgui. qpushbutton (DIALOG) self. pushbutton. setgeometry (qtcore. qrect (160,140, 75, 23) self. pushbutton. setobjectname (_ fromutf8 ("Pushbutton") self. retranslateui (DIALOG) qtcore. qmetaobject. connectslotsbyname (DIALOG) # connect the signal to the specified slot self. pushbutton. clicked. connect (self. on_pushbutton_clicked) def retranslateui (self, DIALOG): dialog. setwindowtitle (_ translate ("dialog", "dialog", none) self. label. settext (_ translate ("dialog", "dialog2", none) self. pushbutton. settext (_ translate ("dialog", "Return main form", none) def on_pushbutton_clicked (Self): Self. form. close () If _ name _ = "_ main _": Import sys APP = qtgui. qapplication (sys. argv) dialog = qtgui. qdialog () UI = dialog2 () UI. setupui (DIALOG) dialog. show () sys.exit(app.exe C _())

Bind the button to the processing function of the new pop-up interface. The slot connection mode is as follows:

self.pushButton.clicked.connect(self.on_pushButton_clicked)

If the menu item is bound to the processing function of the new pop-up interface, the slot connection method should be used:

QtCore.QObject.connect(self.set_value_menu, QtCore.SIGNAL(_fromUtf8("triggered()")), self.open_set_value_form)

The slot processing functions are basically the same.

If the original interface is not displayed, you only need to add the original interface hide (), such:

self.form.hide()

This step is not required if the original window remains visible when a new window is displayed. In this case, to select a top-level form from the original window, use show () when displaying the new window ():

Form1.show()

If the new window is a fixed top-level form and the original form is overwritten, use exec _():

Form1.exec_()

Multiple pyqt window switches